Authorities say a 42-year-old maintenance worker is dead after conducting maintenance on heavy manufacturing equipment.

The Everest Metro Police Department says the incident happened Saturday morning at Greenheck in Schofield.

The Marathon County medical examiner says Michael M. Damask of Hatley died from a blunt-force, crush-type injury.

Officer Mark Hull says the company was performing maintenance during the weekend, when fewer workers were in.

The company makes fans and ventilation equipment.

Vice president of human resources Jon Krueger says the company is saddened by the death.

Authorities are investigating the cause of death. They declined to give further details.